DESIGNING A MULTI-AGENT FRAMEWORK FOR UNMANNED AERIAL/GROUND VEHICLES

Ph.DDOCTOR OF PHILOSOPH

Data Measurements and Its Uses for the Autonomous System

This article describes the problematic area of UAV (Unmanned Aerial Vehicle). This device can be used to communicate with corporate IS and other devices, calculation of localisation, mapping of new places which covered with Wi-Fi technology and many others purposes. Nowadays, trends in the solution of driving and maintenance describe precise localisation. The fundamental error of GPS while using it inside buildings is enormous, and for this reason, we were trying to use infrastructure based on 802.11 a/b/g/n. It takes a focus on the part of measuring of signals and the ability of Wi-Fi signals processing. A limiting factor for this solution might be an environment with a weak or null signal and situations with a smaller amount of beacons. The primary aim of this article is providing an introduction to the problem of use drones and describe collected data for future use.O

A multi-agent approach for service restoration with distributed generation

10.1109/ISGT-Asia.2013.66987322013 IEEE Innovative Smart Grid Technologies - Asia, ISGT Asia 2013

NmF2 trends at low and mid latitudes for the recent solar minima and comparison with IRI-2012 model

The ionospheric electron density peak (NmF2) is analyzed for the recent minima of solar activity for two mid-latitude stations, Rome (41.8°N, 12.5°E, geomagnetic latitude 41.7°N, Italy) and Gibilmanna (37.9°N, 14.0°E, geomagnetic latitude 37.6°N, Italy), and for the low-latitude station of Tucuma´n (26.9°S, 294.6°E, geomagnetic latitude 17.2°S, Argentina), located in the south ridge of the equatorial ionization anomaly. An inter-minima comparison reveals that from an ionospheric point of view the last minimum of solar activity (minimum 23/24) was peculiar, with values of NmF2 lower than those recorded during the previous minima for all the stations and all the hours of the day. A more pronounced decrease is observed at Tucuma´n than at Rome and Gibilmanna. The study of the winter and semiannual anomaly shows that at mid-latitude stations the winter anomaly is not visible only for the years 2008 and 2009, which represent the deeper part of the prolonged and anomalous last solar minimum. The same is for the semi-annual anomaly. A comparison with the version 2012 of the International Reference Ionosphere model (IRI) is also carried out. The results reveal that for low solar activity the model works better at mid latitudes than at low latitudes, confirming the problems of IRI in correctly representing the low-latitude ionosphere. Nevertheless, using as input updated values of the solar and geomagnetic indices, no loss of accuracy is detected in the IRI performances for the last solar minimum with respect to the previous ones, both at mid and low latitudes.Published363-3742A. Fisica dell'alta atmosfera1IT. Reti di monitoraggio4IT. Banche datiJCR Journa

Analysis of Bent Wire Antenna Resonant Frequency for Different Bent Angles

For the bedrock survey in the temperate glacier regions, low frequency antenna system of the airborne ground penetrating RADAR plays a very important role. A small size antenna, working at 10 MHz, would make its use easier in various radar applications. Reducing the resonant frequency of the wire dipole antenna structure, without increasing the physical size, can be attained by introducing bents in the existing structure. This paper introduces a new bent wire dipole antenna and presents the effects of bent angle of 80°, 70°, 60°, 50°, 45° and 40°of the wire antenna on the antenna parameters such as resonant frequency, S11, VSWR, gain and radiation pattern. A broadband four element equivalent circuit model of a straight dipole is used with some modifications in the R, L, C equations for the new bent wire dipole antenna by utilizing the bent angle. The frequency response of the equivalent circuit model, calculated resonant frequency values using the equations and the simulated results of the bent wire dipole antenna is compared and analyzed. As the antenna placement area inside the anechoic chamber is limited, the size of the 10MHz antenna has been scaled down by a factor of 0.01. This modifies the resonant frequency of the new structure to 1GHz. The scaled down antenna system are simulated, analyzed and tested in a GTEM cell. For bandwidth improvement of the 10 MHz antenna, a lumped element matching circuit has been designed and simulated.Published1240-12515A. Ricerche polari e paleoclimaJCR Journa

Assessment of Electromagnetic Absorption of Ice From Ice Core Measurements

DOME C is located on the East Antarctic Plateau at an altitude of 3233 m above sea level and is the site of the Italian–French base, i.e., the Concordia Station ( 123∘20′ E, 75∘06′ S). It has become an important location for several scientific research studies, including astrophysics, geophysics, glaciology, and climatology, due to the perceived long-term stability and thickness of ice at this location [1], [5], [18], [24]. During the site selection and follow up of the EPICA Dome C coring project, which ultimately provided more than 800 000 years of palaeoclimatic series distributed along 3270 m [6], numerous radio-echo sounding (RES) surveys were undertaken to improve core positioning and subsequently to better leverage data and logistical infrastructures from the coring effort. These studies were conducted at very different scales over the Dome C region and revealed important information about the bedrock physiography and its physical conditions [2]– [4], [8], [9], [19], [20], [30], [31]. This study builds upon these efforts using data from two recently acquired ground-based surveys collected during 2009 and 2011 in a very small area (2.5 × 2.0 km) in the immediate proximity of the EPICA drilling site, to test advances in the acquisition and digitization technology and resolve the basal environment to unprecedented detail.Published4758 - 47635A. Paleoclima e ricerche polariJCR Journa